Fuel burner
The fuel injector, centrally mounted in the throttle body, is a solenoid valve that supplies a certain dose of fuel for the corresponding engine load mode. This dose of fuel in the form of finely atomized particles is sent directly to the intake manifold. In this case, the nozzle is under constant fuel pressure, which is provided by the fuel pump and maintained by the pressure regulator.
Removal and installation
1. Relieve pressure in the fuel system and remove the ground wire from the battery.
2. Loosen the clamp and remove the air intake pipe from the throttle body cover. Disconnect the hoses, unscrew the screws and remove the upper casing of the throttle body.
3. Release the clips and disconnect the electrical connector from the fuel injector.
4. Remove the screw securing the plate holding the fuel injector.
5. Remove the fuel injector mounting plate.
6. Remove the fuel injector from the throttle body along with the o-rings (indicated by arrows).
7. Installation is made in sequence, return to removal. In this case, new sealing rings must be installed on the fuel injector.
Pressure regulator
Warning! The pressure regulator is an integral part of the upper section of the throttle body.
Removal and installation
1. Relieve pressure in the fuel system and remove the ground wire from the battery.
2. Loosen the clamp and disconnect the air intake pipe from the upper casing of the throttles. Disconnect the hoses, unscrew the screws and remove the upper casing of the throttle body.
3. Using a marker, put alignment marks on the regulator cover and throttle body. Then unscrew the screws (indicated by arrows) and remove the pressure regulator cap.
4. Remove the cover (4), then remove the spring seat (3), spring (2) and diaphragm (1). Check the condition of the diaphragm and replace if necessary.
5. Installation is made in sequence, return to removal.
Idle speed control motor
Removal and installation
1. Remove the ground wire from the battery.
2. To improve access to the engine, loosen the clamp and disconnect the air intake pipe from the upper throttle housing. Disconnect the hoses, unscrew the screws and remove the upper casing of the throttle body.
3. Loosen the latches and disconnect the electrical connectors from the idle speed stepper motor mounted on the front of the throttle body.
4. Unscrew the screws and remove the idle speed control motor (indicated by an arrow).
5. Installation is made in sequence, return to removal. In this case, it is necessary to install a new sealing ring. Also check that the plunger face does not protrude more than 28mm from the engine. If necessary, move the plunger to set the correct protrusion.
Throttle potentiometer
Removal and installation
1. Remove the ground wire from the battery. Loosen the clamps and remove the electrical connector from the throttle potentiometer, which is located on the left side of the throttle body.
2. Unscrew the screws and remove the potentiometer.
3. Before installing, apply an anti-loose agent to the threads of the bolts, install the potentiometer and secure with the bolts, tightening them to the required torque.
Coolant temperature sensor
The coolant temperature sensor is located at the rear of the intake manifold.
Manifold absolute pressure sensor
The intake manifold absolute pressure sensor is mounted on the bulkhead of the engine compartment to the left of the throttle body.
Removing
Switch off the ignition, disconnect the electrical connector and vacuum hose from the sensor. Unscrew and remove the sensor.
Crankshaft sensor
The sensor is mounted on the rear of the cylinder block and is accessible from below the vehicle.
Removal and installation
1. Raise the front of the car and secure it on stands.
2. Remove the sensor wiring from the mounting brackets and disconnect the sensor electrical connector.
3. unscrew the bolt (indicated by an arrow) and remove the sensor.
4. Installation is made in sequence, return to removal.
5. Using a feeler blade, check that the gap between the end of the sensor and the teeth of the crankshaft pulley is 1±0.7 mm.
Knock sensor
The knock sensor is mounted on the rear of the cylinder block and is accessible from below the vehicle.
Removal and installation
1. The knock sensor is mounted on the rear of the cylinder block and is accessible from below the vehicle. Raise the front of the car and secure it on stands.
2. Disconnect the sensor electrical connector located on the sensor wires.
3. Unscrew a bolt and remove the gauge from the engine.
4. Check that the mating surfaces of the sensor and cylinder block are clean and dry, install the sensor, secure with a bolt and connect the electrical connector.
Electronic control device (ecu)
The ECU is located under the water deflector in front of the windshield.
Removal and installation
1. Remove the ground wire from the battery. Remove the wiper arms.
2. Remove the top seal from the bulkhead of the engine compartment and remove the water deflector.
3. Unscrew nuts and remove a protective casing of the block ECU.
4. Disconnect the electrical connectors, unscrew the nuts and remove the ECU.
5. Installation is made in sequence, return to removal.
Fuel pump relay
The fuel pump relay is located in the engine compartment in the relay box.
Removal and installation
1. Remove the relay box cover and remove the fuel pump relay, which is purple.
2. Installation is made in sequence, return to removal.
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